Post image 1

DEF quality sensor throwing ghost codes in 105°F heat — third time this month

2022 Cascadia, DD13. Every time ambient goes over 100°F I get DEF quality warning, sometimes with derate countdown, then next morning it clears itself like nothing happened. Dealer says fluid tests fine. I say sensor is gaslighting me. Anyone else fighting this in the heat? I am one derate away from doing something I will regret to that sensor.

Day-to-Day

4 answers

Carl Jenkins
Carl Jenkins
20 Jul
Star icon for review score info.0 (0)

MY 2004 NEVER DID THIS. carry on.

Star icon for review score info.

Star icon for review score info.

Star icon for review score info.